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JPL Small-Body Database Browser
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74371 (1998 XG1)
Classification: Main-belt Asteroid          SPK-ID: 2074371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149851059456244 4.8701e-08  
a 3.001379375690672 2.6729e-08 au
q 2.656265450193868 1.4135e-07 au
i 10.80778876988314 8.8813e-06 deg
node 232.4317093852275 3.824e-05 deg
peri 237.4204969272369 5.8353e-05 deg
M 288.9117694316196 4.538e-05 deg
tp 2458975.537738737557
(2020-May-06.03773874)
0.00024115 TDB
period 1899.239647210655
5.20
2.5371e-05
6.946e-08
d
yr
n .1895495392215084 2.5321e-09 deg/d
Q 3.346493301187476 2.9802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      7684 days (21.04 yr)  
   first obs. used      1998-11-14  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56356  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:46:21  

Additional Information
 Earth MOID = 1.69155 au 
 Jupiter MOID = 1.93458 au 
 T_jup = 3.216 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO351368  
diameter diameter 4.017 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.144   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74371 (1998 XG1)          Discovered 1998-Dec-07 by ODAS at Caussols
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XG1 = 2000 EH21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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